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Fernblock® protects keratinocytes from PM2.5-induced toxicity. MTT assay was performed on HaCaT samples across indicated treatments on PM2.5, Fernblock®, or combinations of both compounds (see Materials and Methods). All data are expressed as normalized to untreated samples (leftmost bar group of graph). n = 3. ∗p ≤ 0.05 and ∗∗∗p ≤ 0.005.
